dubbo3.0.2 Serializer error

[zlw-9536]

java.lang.RuntimeException: java.lang.NullPointerException
at org.apache.dubbo.common.function.ThrowableFunction.execute(ThrowableFunction.java:54) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.common.function.ThrowableFunction.execute(ThrowableFunction.java:69) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.zookeeper.ZookeeperServiceDiscovery.doInServiceDiscovery(ZookeeperServiceDiscovery.java:194) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.zookeeper.ZookeeperServiceDiscovery.getInstances(ZookeeperServiceDiscovery.java:121) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.lambda$subscribeURLs$2(ServiceDiscoveryRegistry.java:313) ~[dubbo-3.0.0.jar:3.0.0]
at java.lang.Iterable.forEach(Iterable.java:75) ~[?:1.8.0_172]
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.lambda$subscribeURLs$3(ServiceDiscoveryRegistry.java:312) ~[dubbo-3.0.0.jar:3.0.0]
at java.util.HashMap.computeIfAbsent(HashMap.java:1127) ~[?:1.8.0_172]
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribeURLs(ServiceDiscoveryRegistry.java:309) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.doSubscribe(ServiceDiscoveryRegistry.java:243) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.ServiceDiscoveryRegistry.subscribe(ServiceDiscoveryRegistry.java:220) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.ListenerRegistryWrapper.subscribe(ListenerRegistryWrapper.java:106) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.integration.DynamicDirectory.subscribe(DynamicDirectory.java:136) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.integration.RegistryProtocol.doCreateInvoker(RegistryProtocol.java:514) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.integration.InterfaceCompatibleRegistryProtocol.getServiceDiscoveryInvoker(InterfaceCompatibleRegistryProtocol.java:65) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.migration.MigrationInvoker.refreshServiceDiscoveryInvoker(MigrationInvoker.java:426) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.migration.MigrationInvoker.migrateToApplicationFirstInvoker(MigrationInvoker.java:241) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.refreshInvoker(MigrationRuleHandler.java:81) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.migration.MigrationRuleHandler.doMigrate(MigrationRuleHandler.java:65) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.client.migration.MigrationRuleListener.onRefer(MigrationRuleListener.java:148) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.integration.RegistryProtocol.interceptInvoker(RegistryProtocol.java:485) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:467) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:452) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:74) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.rpc.cluster.filter.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:68) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:73) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:392) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:328) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:205) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.utils.ReferenceConfigCache.lambda$get$3(ReferenceConfigCache.java:114) ~[dubbo-3.0.0.jar:3.0.0]
at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) ~[?:1.8.0_172]
at org.apache.dubbo.config.utils.ReferenceConfigCache.get(ReferenceConfigCache.java:113) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.bootstrap.DubboBootstrap.lambda$referServices$8(DubboBootstrap.java:1342) ~[dubbo-3.0.0.jar:3.0.0]
at java.util.HashMap$Values.forEach(HashMap.java:981) ~[?:1.8.0_172]
at org.apache.dubbo.config.bootstrap.DubboBootstrap.referServices(DubboBootstrap.java:1321) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.bootstrap.DubboBootstrap.start(DubboBootstrap.java:1100) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onContextRefreshedEvent(DubboBootstrapApplicationListener.java:70) ~[dubbo-3.0.0.jar:3.0.0]
at org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener.onApplicationContextEvent(DubboBootstrapApplicationListener.java:63) ~[dubbo-3.0.0.jar:3.0.0]
at com.alibaba.spring.context.OnceApplicationContextEventListener.onApplicationEvent(OnceApplicationContextEventListener.java:52) ~[spring-context-support-1.0.8.jar:?]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:400) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:354) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:888) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:161) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at com.lazyaudio.yyting.core.provider.Application.main(Application.java:16) [classes/:?]

The error msg as above,the reason is serializer the registerInfo from zookeeper error,cause the port is null

[plusmancn]

Relate to #8666

[CrazyHZM]

@zlw-9536 Please provide more information to help reproduce.

[CrazyHZM]

No feedback for a long time, please close the issue temporarily. If there is still a problem, you can reopen it.